Receiver Extension Parts

Various sets and individual items that make up the receiver extension are all here on AT3. The buffer tube, spring, buffer, castle nut, and the locking ring are all available for the milspec or the commercial variants.

Don't rely on inferior buffer tubes when assembling the collapsible stock for your AR-15 style rifle. The INTRAFUSE buffer tube from TAPCO is manufactured using impact extruded 7075 T6 aircraft aluminum with a Mil-Std 171 matte black exterior coating and a Mil-Spec dry film lubricant inside the tube that makes the action extremely quiet. Proudly made in the U.S.A.

The RSA-QD provides a forward attachment point for the Magpul MS4 Sling and other push-button QD slings. Made from corrosion resistant steel, mounts on 1913 Picatinny rail, and places the attachment point at an angle optimized for comfortable two-point sling use while maintaining easy push-button access.
Made in U.S.A.

While the ACS™ and ACS-L™ now come standard with the Sling Mount Kit - Type 3, it can be added to either the right or left side of older models for use with push-button QD sling swivels. Heavy-duty black phosphatized steel construction easily installs with provided hardware. Swivels not included. Made in U.S.A. NOTE: Many makes of push-button QD swivels...

The LBE Unlimited Recoil Spring for the AR15 reduces the feel of the mechanical recoil of your AR. It is used in coordination with the buffer tube and buffer, as part of the overall recoil system.
FEATURES:
Recoil Spring; Reduces the feel of the mechanical recoil of your AR
SPECIFICATIONS:
Weight: 0.13 lbs

The LBE Unlimited Recoil Buffer Tube is made from 6061 Aluminum. For your Six Position Commercial Spec Buffer Tube, get the BUF001.
FEATURES:
6061 Aluminum - Light and strong
Six Position Commercial Spec Buffer Tube - made for commercial spec buttstocks only
SPECIFICATIONS:
Material: 6061 Aluminum

The LBE Unlimited ARLPLT is an AR-15 Buffer Tube Lock Plate made from 4140 Steel. It is Manganese Phosphate coated to protect it and make it last longer.
FEATURES:
4140 Steel - Strong and tough
Manganese Phosphate coated - Protected to last
SPECIFICATIONS:
Material: 4140 Steel
Finish: Manganese Phosphate coated

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